PCI Bridge hacks

Recently, someone sent me a new ExpressCard. This isn't the first ExpressCard that I've had. However, this one is PCIe based. I plugged it in, and it didn't work. I had no idea where to begin tracking it down, so I've added some information to pcib device. Now, we report the all the bus numbers that are relevant. Turns out after a little more digging the memory allocation on the bridge is wrong. None was allocated by the BIOS and FreeBSD isn't picking up the slack. That's the next set of problems to solve.... After that, I'll look at the hotplug functionality...